should suffocate
Regular verb: suffocate - suffocated- suffocated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'd suffocate
you'd suffocate
she'd suffocate
we'd suffocate
you'd suffocate
they'd suffocate 	I'd be suffocating
you'd be suffocating
she'd be suffocating
we'd be suffocating
you'd be suffocating
they'd be suffocating	I should've suffocated
you should've suffocated
she should've suffocated
we should've suffocated
you should've suffocated
they should've suffocated	I should've been suffocating
you should've been suffocating
she should've been suffocating
we should've been suffocating
you should've been suffocating
they should've been suffocating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shouldn't suffocate
you shouldn't suffocate
she shouldn't suffocate
we shouldn't suffocate
you shouldn't suffocate
they shouldn't suffocate 	I shouldn't be suffocating
you shouldn't be suffocating
she shouldn't be suffocating
we shouldn't be suffocating
you shouldn't be suffocating
they shouldn't be suffocating	I shouldn't have suffocated
you shouldn't have suffocated
she shouldn't have suffocated
we shouldn't have suffocated
you shouldn't have suffocated
they shouldn't have suffocated	I shouldn't have been suffocating
you shouldn't have been suffocating
she shouldn't have been suffocating
we shouldn't have been suffocating
you shouldn't have been suffocating
they shouldn't have been suffocating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I suffocate?
should you suffocate?
should she suffocate?
should we suffocate?
should you suffocate?
should they suffocate? 	should I be suffocating?
should you be suffocating?
should she be suffocating?
should we be suffocating?
should you be suffocating?
should they be suffocating? 	should I have suffocated?
should you have suffocated?
should she have suffocated?
should we have suffocated?
should you have suffocated?
should they have suffocated? 	should I have been suffocating?
should you have been suffocating?
should she have been suffocating?
should we have been suffocating?
should you have been suffocating?
should they have been suffocating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shouldn't I suffocate?
shouldn't you suffocate?
shouldn't she suffocate?
shouldn't we suffocate?
shouldn't you suffocate?
shouldn't they suffocate? 	shouldn't I be suffocating?
shouldn't you be suffocating?
shouldn't she be suffocating?
shouldn't we be suffocating?
shouldn't you be suffocating?
shouldn't they be suffocating? 	shouldn't I have suffocated?
shouldn't you have suffocated?
shouldn't she have suffocated?
shouldn't we have suffocated?
shouldn't you have suffocated?
shouldn't they have suffocated? 	shouldn't I have been suffocating?
shouldn't you have been suffocating?
shouldn't she have been suffocating?
shouldn't we have been suffocating?
shouldn't you have been suffocating?
shouldn't they have been suffocating?